TY - GEN
T1 - Asymmetric mixed modular multilevel converter topology in bipolar HVDC transmission systems
AU - Jung, Jae Jung
AU - Lee, Joon Hee
AU - Sul, Seung Ki
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/3
Y1 - 2017/11/3
N2 - In this paper, an asymmetric mixed MMC topology of multilevel converter for bipolar HVDC transmission systems is introduced. Among the existing MMC topologies for the bipolar HVDC systems, the asymmetric mixed MMC topology provides the benefits of: A lower number of submodule cells, fewer switching devices and lower conduction losses. Furthermore, the HVDC based on asymmetric mixed MMC can be flexibly operated at a reduced DC voltage, even zero DC voltage under DC line fault conditions. Also, the flexible DC voltage controllability in asymmetric mixed MMC permits a slow rampup along the DC line fault recovery characteristics. Finally, the full-scaled simulation results and the experimental results with a scaled version in laboratory are provided to support the validity of the asymmetric mixed MMC for bipolar HVDC system.
AB - In this paper, an asymmetric mixed MMC topology of multilevel converter for bipolar HVDC transmission systems is introduced. Among the existing MMC topologies for the bipolar HVDC systems, the asymmetric mixed MMC topology provides the benefits of: A lower number of submodule cells, fewer switching devices and lower conduction losses. Furthermore, the HVDC based on asymmetric mixed MMC can be flexibly operated at a reduced DC voltage, even zero DC voltage under DC line fault conditions. Also, the flexible DC voltage controllability in asymmetric mixed MMC permits a slow rampup along the DC line fault recovery characteristics. Finally, the full-scaled simulation results and the experimental results with a scaled version in laboratory are provided to support the validity of the asymmetric mixed MMC for bipolar HVDC system.
KW - Asymmetric mixed modular multilevel converter(ASYM-MMC)
KW - Bipolar HVDC transmission system
KW - DC fault ridethrough
KW - Hybrid arm MMC
UR - http://www.scopus.com/inward/record.url?scp=85041431074&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2017.8095985
DO - 10.1109/ECCE.2017.8095985
M3 - Conference contribution
AN - SCOPUS:85041431074
T3 - 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
SP - 1615
EP - 1621
BT - 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
Y2 - 1 October 2017 through 5 October 2017
ER -